Kestrel is a sleepy, friendly wolf, in training for pupsitting.
He's a very lazy wolf, but still enjoys his packmates and his adopted moms, Magpie and Pipit- he tolerates his adopted sister, Robin. (he loves her)
Kestrel was brought to the Skystrike pack by Leo as a puppy, from the Enclave where he was given up by his birth pack. When he arrived at the home of his new pack, Leo took him straight to a pair of wolves chatting in the sun, who were instantly overjoyed at the thought of a puppy of their own to raise.
He fell in love with his news moms very fast, and it wasn't long before he saw them as his true family.
The reaction to Robin was about the same, overjoyed and excited moms, just with a curious and eager pup with them, happy to have a sister.